Home / 20,808,005.40-31,212,008.10-11,218,447.80

Finding the Fourth Proportional to 20,808,005.40, 31,212,008.10 and 11,218,447.80

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Solution

The fourth proportional to 20,808,005.40, 31,212,008.10 and 11,218,447.80 is: 16,827,671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808,005.40 : 31,212,008.10 = 11,218,447.80 : x
  2. Step 2: Convert to fraction form
    20,808,005.40/31,212,008.10 = 11,218,447.80/x
  3. Step 3: Cross multiply
    20,808,005.40x = 31,212,008.10 × 11,218,447.80
  4. Step 4: Simplify right side
    20,808,005.40x = 350,150,283,603,027.25
  5. Step 5: Solve for x
    x = 350,150,283,603,027.25/20,808,005.40
  6. Step 6: Final answer
    x = 16,827,671.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.